@sdetweil After much troubleshooting, I’ve narrowed the problem down to only occur when I have screen rotation turned on (in the /boot/config.txt file). Changing the rotation approach to use the custom.css file instead, the problem has gone away.

@sdetweil it was an upgrade

Getting the following error details:

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'start' ]
2 info using npm@6.11.2
3 info using node@v10.15.3
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle magicmirror@2.11.0~prestart: magicmirror@2.11.0
6 info lifecycle magicmirror@2.11.0~start: magicmirror@2.11.0
7 verbose lifecycle magicmirror@2.11.0~start: unsafe-perm in lifecycle true
8 verbose lifecycle magicmirror@2.11.0~start: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/home/pi/MagicMirror/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
9 verbose lifecycle magicmirror@2.11.0~start: CWD: /home/pi/MagicMirror
10 silly lifecycle magicmirror@2.11.0~start: Args: [ '-c',
10 silly lifecycle   'DISPLAY="${DISPLAY:=:0}" ./node_modules/.bin/electron js/electron.js' ]
11 silly lifecycle magicmirror@2.11.0~start: Returned: code: 1  signal: null
12 info lifecycle magicmirror@2.11.0~start: Failed to exec start script
13 verbose stack Error: magicmirror@2.11.0 start: `DISPLAY="${DISPLAY:=:0}" ./node_modules/.bin/electron js/electron.js`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:189:13)
13 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:189:13)
13 verbose stack     at maybeClose (internal/child_process.js:970:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid magicmirror@2.11.0
15 verbose cwd /home/pi/MagicMirror
16 verbose Linux 4.14.98-v7+
17 verbose argv "/usr/bin/node" "/usr/bin/npm" "start"
18 verbose node v10.15.3
19 verbose npm  v6.11.2
20 error code ELIFECYCLE
21 error errno 1
22 error magicmirror@2.11.0 start: `DISPLAY="${DISPLAY:=:0}" ./node_modules/.bin/electron js/electron.js`
22 error Exit status 1
23 error Failed at the magicmirror@2.11.0 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

I have watchdog running, so it keeps trying to restart, but I get the same error. Visually, I see several modules load each time, but then it crashes.